LWRC SIX8-A5 Razorback II: The Best 6.8 SPC AR-15?

Published on December 27, 2019
Duration: 33:15

This review of the LWRC SIX8-A5 Razorback II highlights its effectiveness as a 6.8 SPC AR-15, offering enhanced terminal ballistics over 5.56 NATO. The rifle features a robust short-stroke piston system, fully ambidextrous controls, and a proprietary magazine for reliability. While expensive, its build quality and performance make it a top-tier option for hunting and self-defense, as assessed by experienced reviewer Mrgunsngear.

Quick Summary

The LWRC SIX8-A5 Razorback II is a premium 6.8 SPC AR-15 offering superior terminal ballistics over 5.56 NATO, ideal for hunting and defense. It features a reliable short-stroke piston system, fully ambidextrous controls, and proprietary magazines. Tested for flawless reliability over 1,500 rounds, its accuracy potential is good, with groups around 1.125 inches at 100 yards.

Chapters

  1. 00:00Introduction: LWRC SIX8-A5 Razorback II Overview
  2. 02:13Accuracy Testing: 100 Yard Groups with 6.8 SPC Ammo
  3. 05:37Barrel and Gas System: Piston Design and Features
  4. 10:55Receivers and Ambidextrous Controls Explained
  5. 13:16Internal Components: BCG and Bolt Design
  6. 19:556.8 SPC Ballistics vs. Other Calibers & Magazine Needs
  7. 24:44Conclusion: Value, Reliability, and Pricing

Frequently Asked Questions

What makes the LWRC SIX8-A5 Razorback II suitable for hunting and defense?

The LWRC SIX8-A5 Razorback II excels due to its 6.8 SPC chambering, which offers superior terminal ballistics compared to 5.56 NATO out to 300 yards. Its robust piston system and reliable operation, combined with a weight similar to standard AR-15s, make it a potent choice for medium game hunting and personal defense scenarios.

What are the key features of the LWRC SIX8-A5 Razorback II's operating system?

It utilizes a short-stroke gas piston system with adjustable settings for suppressed and unsuppressed use. This design isolates the bolt carrier group from direct gas impingement, reducing fouling and heat, and enhancing reliability. The removable top rail allows easy access for maintenance without disturbing optics.

Is the LWRC SIX8-A5 Razorback II compatible with standard AR-15 magazines?

No, the LWRC SIX8-A5 Razorback II is not compatible with standard 5.56 NATO STANAG magazines. LWRC partnered with Magpul to develop proprietary magazines and a modified lower receiver specifically for the 6.8 SPC cartridge to ensure optimal feeding and reliability.

How accurate is the LWRC SIX8-A5 Razorback II?

During testing at 100 yards with a 1-8x scope and suppressor, the rifle achieved groups as tight as 1.125 inches with Federal American Eagle 90-grain TNT JHP ammunition. The reviewer noted that an aftermarket trigger could potentially improve these results further.

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